Effect of γ-ray irradiation on the properties of nanostructured oxovanadate based oxidative dehydrogenation catalysts

Khan, M. Ishaque; Aydemir, Kadir; Siddiqui, Mohammed Rafiq H.; Al–Warthan, Abdulrahman; Kaduk, James A.; Marshall, Christopher L.

doi:10.1016/j.radphyschem.2013.02.040

Cited by 2 publications

(1 citation statement)

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“…Activation of heterogeneous catalysts by high-energy beams can significantly improve their properties. In a number of works, modification of catalysts by gamma rays significantly improved the yield of reactions of oxidative dehydrogenation of propane at the expense of the changes in the concentration of catalytically active sites on the catalyst surface [11,12]. After the irradiation with gamma rays (0.8 MGy) of the catalysts based on CuO/MgO and NiO/MgO, the rate of decomposition of hydrogen peroxide increased several times [7].…”

Section: Introductionmentioning

confidence: 99%

Electron Beam Induced Enhancement of the Catalytic Properties of Ion-Track Membranes Supported Copper Nanotubes in the Reaction of the P-Nitrophenol Reduction

et al. 2019

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This study considers the effect of various doses of electron irradiation on the crystal structure and properties of composite catalysts based on polyethylene terephthalate track-etched membranes and copper nanotubes. Copper nanotubes were obtained by electroless template synthesis and irradiated with electrons with 3.8 MeV energy in the dose range of 100–250 kGy in increments of 50 kGy. The original and irradiated samples of composites were investigated by X-ray diffraction technique (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM). The improved catalytic activity of composite membranes with copper nanotubes was demonstrated by the example of the reduction reaction of p-nitrophenol in the presence of sodium borohydride. Irradiation with electrons at doses of 100 and 150 kGy led to reaction rate constant increases by 35 and 59%, respectively, compared to the non-irradiated sample. This enhancing catalytic activity could be attributed to the changing of the crystallite size of copper, as well as the surface roughness of the composite membrane.

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Section: Introductionmentioning

confidence: 99%